Elizabeth Warren announced Monday that she is endorsing four Democrats, including two House Democratic primary challengers. The news broke days before the Massachusetts senator is set to take the stage for the third Democratic primary debate. CBS News 2020 Campaign Reporter Zak Hudak joined CBSN to discuss how these endorsements...

For the first time, all of the top 10 candidates will be facing off against each other at the same time. Only 10 qualified, so unlike earlier debates, 20 candidates won't be spread out over two nights.